ARRANGEMENT FOR EXPANDING PILOT BOREHOLE,申请号SU19843726743-传众专利搜索

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发明名称	ARRANGEMENT FOR EXPANDING PILOT BOREHOLE
摘要
申请公布号	SU1212575(A1)	申请公布日期	1986.02.23
申请号	SU19843726743	申请日期	1984.04.16
申请人	LVOVSKIJ POLT I IM.LENINSKOGO KOMSOMOLA	发明人	GOLUBYATNIKOV VLADIMIR T,SU
分类号	E21B7/30;E02F5/18;E21B7/28;(IPC1-7):E02F5/18	主分类号	E21B7/30
代理机构		代理人
主权项
地址

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